You will get bugs fixed and new features added to your MERN stack application
Project details
You will get professional bug fixing, feature development, and performance improvements for your existing MERN stack application. I will review your React frontend, Node.js and Express backend, MongoDB database, APIs, authentication, and deployment setup to identify the root cause of issues and deliver reliable solutions.
With 2.5+ years of professional development experience, I focus on clean code, secure APIs, responsive interfaces, maintainable architecture, and careful testing. I can fix React UI problems, broken APIs, MongoDB queries, authentication errors, role and permission issues, form validation, third-party integrations, and deployment problems.
I can also add new pages, dashboards, reports, API endpoints, user roles, filters, file uploads, email notifications, and other business features. You will receive updated source code, a clear explanation of the changes, and testing within the agreed scope.
With 2.5+ years of professional development experience, I focus on clean code, secure APIs, responsive interfaces, maintainable architecture, and careful testing. I can fix React UI problems, broken APIs, MongoDB queries, authentication errors, role and permission issues, form validation, third-party integrations, and deployment problems.
I can also add new pages, dashboards, reports, API endpoints, user roles, filters, file uploads, email notifications, and other business features. You will receive updated source code, a clear explanation of the changes, and testing within the agreed scope.
Programming Languages
JavaScriptCoding Expertise
Cross Browser & Device Compatibility, Performance OptimizationWhat's included
| Service Tiers |
Starter
$80
|
Standard
$250
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 12 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$30 - $100
Additional Revision
+$50Frequently asked questions
About Muhammad
MERN Stack Developer | Node.js Backend, REST APIs & Stripe
Pakpattan, Pakistan - 2:19 am local time
I build scalable Node.js backends, secure REST APIs, optimized MongoDB databases, and reliable Stripe payment workflows.
You get clean, maintainable solutions aligned with your technical and business requirements.
I am a backend-focused MERN Stack Developer with 2.5+ years of professional experience in Node.js, Express.js, MongoDB, Mongoose, REST API development, Stripe integrations, webhooks, and real-time application features.
What I Can Help With
• MERN stack application development
• Node.js and Express.js backend development
• REST API development and third-party API integration
• MongoDB schema design, indexing, and aggregation pipelines
• Stripe subscriptions, one-time payments, commissions, and webhooks
• JWT authentication and Role-Based Access Control (RBAC)
• SaaS, CRM, inventory, and financial management platforms
• Real-time chat and notifications using WebSockets
• API debugging, bug fixing, refactoring, and performance optimization
• Swagger/OpenAPI documentation and Postman testing
I have worked on CRM systems, financial platforms, inventory applications, multi-portal software, payment systems, and FBR e-invoicing workflows.
In one project, I reduced MongoDB query latency by 40% through schema redesign, indexing, and query optimization. I have also built reusable backend tools that improved development speed and consistency across CRUD modules.
My development approach focuses on secure code, modular architecture, database performance, clear API documentation, and dependable communication.
Share your project requirements, current technology stack, and main challenge, and let’s build a secure, scalable, and reliable solution.
Steps for completing your project
After purchasing the project, send requirements so Muhammad can start the project.
Delivery time starts when Muhammad receives requirements from you.
Muhammad works on your project following the steps below.
Revisions may occur after the delivery date.
Code and Requirement Review
will review your requirements, existing source code, error details, application structure, and expected results before making changes.
Issue Analysis and Planning
I will identify the root cause of the issues and plan the safest approach for bug fixing, feature development, and integration.